Lock for elevator-doors.



M. GILMORE.

LOOK FOR ELEVATOR DOORS.

APPLIOATION FILED 111111.31, 191s.

Patented Nov. 10, 1914.

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M. GILMORE.

LOOK FOR ELEVATOR DOORS.

APPLICATION FILED MAR.31, 1913- 1,1 16,410. Patented Nov. 10, 1914.

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UNITED S AT S PATENT OFFICE.

MILLARD GILMORE, OF CHIOAGO, ILLINOIS, ASSIG-NOR T0 VARIETY MANUFACTURING COMPANY, OF CHICAGO. ILLINOIS, A CORPORATION OF ILLINOIS.

LOOK FOR ELEVATOR-DOORS.

Specification of Letters Patent.

Application filed March 31, 1913. Serial No. 757,750.

1 '0 all whom it may concern: 1

Be it known that I, MILLARD GILMORE, a citizen of the'United. States,and a resident of Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Locks for Elevator- Doors, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification. My invention relates to looks for elevator doors, and its object is to provide a simphfied arrangement by which the. doors are automatically and positively locked when closed and at the same time very easily operated when it is desired to open the doors.

My invention contemplates a construction in which two parts or panels of a door, mounted substantially in the same plane are adapted to be separated and brought together when the door is opened and closed. The locking levers employed are so designed that they serve, first, to lock the panels together and then to lock said panels to the framework disposed at the sides of the door opening. a

My invention will be clearly understood by referring to the accompanying drawings inwhich,

Figure 1 is an elevational view of the mechanism, embodying the improved features of my invention. Fig. 2 1s a detailed view of one of the locking levers and its associated mechanism, some of the parts being broken away to more clearly reveal the construction. Fig. 3 is a cross-sectional VleW taken on line 33 of Fig. 2. F ig. 4 is a cross-sectional view taken on line 44 of Fig. 2. I

Similar reference characters refer to s1m1- lar parts throughout the several views.

Referring to Figs. 1 and 2, the upper and lower panels of the door are shown at 1 and 2. Secured to the panel 2 is a bar, 3, which extends beyond both ends of said panel, as shown, and has secured thereto at each end rods, 4 and 5. Each of these rods has secured thereto a cable or chain, shown at 6 and 7 extending up over the sheaves 8 and 9 and down to the lower portion of the upper panel. Each of the panels 1 and 2 1s incased in angle irons 10 and 11 respectively,

as clearly shown in Figs. 1 and 4. Bolted to these angles and at each end of panel 1 are angle irons 12 and 13 which, as will be presently explained, serve as guide members for the panel. The lower panel 2 is also pro vided with guide members which are shown at 14 and 15 secured to the angle iron casing. Angle irons 16, bolted to the wall 17 have secured thereto guiding angles 18, as clearly illustrated in Figs. 1 and 1. The angle irons 12, 13, 14 and 15 project into the slots formed by the angle irons 16 and 18 and the wall.

I will now describe the mechanism whereby the panels comprising the door are locked together and to the frame work surroundin' the door opening. The panel 1 is provided with keepers shown at 23 and 24, through which extends a rod 25 which is provided at each of its ends with an elongated slot 26. This rod 25 is arranged with an outwardly extending portion 25 so that an operator may easily manipulate the rod 25 in order to raise the same when it is desired. Bell crank levers 26 and 27 pivoted at 28 and 29 are provided at each lower corner of the upper panel. Pins 30 extending through each of the slots 26 serve to connect the levers 26 and 27 with the rod 25. Secured to thecasingof the lower panel 2 are blocks Patented N 0v. 10, 1914- 31, provided with apertures 32, adapted to receive the lower ends of the bell crank levers when the panels are in their closed position. Theseblocks have their top ends beveled as shown so that when the panels are brought together, the bell crank levers 26 and 27 will be actuated so that the ends thereof will pass by the ends ofthese blocks. In addition. to beveling these blocks, the locking ends of the levers are rounded so as to facilitate the operation. Suitably mounted on the angle irons l and 18 I have provided blocks 33 having apertures 34:, into which the ends of the levers 26 and 27 engage when the panels 1 and 2 are locked. to the framework. These blocks have part of their upper ends beveled off so as to form inclined surfaces 31. This arrangement serves to facilitate the lowering of the upper anel into engagement with the lower panel By forming inclined riding surfaces for the ends of the bell crank levers 26 and 27. As shown in Figs. 8 and 4, the innermost portions of each of the blocks 33 are not cut oil but extend at right angles to the vertical surfaces of the blocks. At 35 I haveshown an astragal which serves to tightly close the joint when the panels are brought together.

It will be seen that to open the door, the

projection 25 of the bar 25 is grasped and' moved upward thus rotating the levers 26 and 27 so that their ends are withdrawn from the blocks 31 and 33. The position of the parts is shown by the dotted lines in Fig. 1 and the panel 1 will be moved upwardly and the panel 2 will be moved downwardly a corresponding distance until the limit of motion has been reached, that is to say, when the angle iron 39 strikes the floor. In closing the door, the upper panel is moved downward and during such movement and as the panels 1 and 2 near each other, the ends of the levers 26 and 27 will first strike the blocks 33 and then the blocks 31 and when the openings in these blocks register, the ends of the levers 26 and 27 are forced into locking engagement with these blocks owing to the weight of the bar 25. The panels are thus securely locked relative to each other and also to the framework. It will be observed that the rod 25 maintains the levers 26 and 27 in their normal position. It will be noted that the looking of the panels to each other as well as to the frames disposed at the sides of the opening is automatic in its nature.

An angle iron 39, extending almost entirely across the lower panel and secured thereto limits the downward movement of the lower panel by engaging the floor. This angle will bridge the opening occurring between this panel and the floor thus forming means whereby trucks and similar means of conveyance can be passed from the floor and into the elevator.

I do not wish to be limited to the precise arrangement shown and described since it will be apparent to those skilled in the art that modifications may be made without departing from the spirit and scope of my invention.

WVhat I claim is:

1. In an elevator door, the combination of separate upper and lower panels and bell crank levers carried by one of said panels,

said bell crank levers being adapted to engage the other panel and the framework of the doorway, thereby locking the panels to each other, and to the framework of the doorway.

' 2. In an elevator door, the combination of upper and lower panels, means for guiding said panels, levers pivoted to said upper panel, a bar connecting said levers so that they may be simultaneously actuated, locking blocks secured to said lower panel and adapted to be engaged by said levers, and locking blocks secured to said guiding means and arranged so as to be engaged by said levers, thus locking the panels together and to said guiding means.

8. In apparatus of the class described, the combination of upper and lower panels, guiding means therefor, bell crank levers pivoted to said upper panel, means connecting said levers, locking blocks secured to said lower panel, locking blocks carried by said guiding means, said locking blocks having apertures adapted for the reception of the ends of said bell crank levers when the panels are brought together, thus locking them together and to said guiding means.

1. In apparatus of the class described, the combination of upper and lower panels, guiding means for said panels, bell crank levers pivoted to said upper panel, a rod con necting said bell crank levers, locking blocks secured to said lower panel, locking blocks secured to said guiding means, guiding clips carried by the upper panel and arranged so that one portion thereof will engage with the locking blocks secured to the guiding means thereby limiting the downward movement of the upperpanel, said locking blocks having apertures adapted for the reception of the ends of the bell crank levers when it is desired to lock said panels in place.

In witness whereof, I hereunto subscribe my name this 22nd day of March, A. 1)., 1913.

,MILLARD GILMORE.

Witnesses:

LESLIE W. FRICKE, ROBERT F. BRAQKE.

five cents each, by addressing the Commissioner of latents, Washington, I). 0. 

